use onchanged instead of ondateselected. There was some refactoring according to some other requests and unfortunatelly we had to change some attributes behaviour.
ondateselected event is fired after the data selected but before the input updated.
Now the thing is working but when I set date by manual input, it takes 18 sec to get information (I believe it is called server request - progress bar is shown at the bottom of my browser) but when I select that same date, it takse 140 sec to get that same data from database (a4j:status is shown - I believe it is ajax request). Why is that so?
unfortunatelly could not reproduce this on our side and I'm sure that should be no difference between this two requests. Could you please profile you request and reopen the bug with profiler log.